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EP2697580B1 - Dispositif évaporateur pour appareil frigorifique - Google Patents

Dispositif évaporateur pour appareil frigorifique Download PDF

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Publication number
EP2697580B1
EP2697580B1 EP12715644.6A EP12715644A EP2697580B1 EP 2697580 B1 EP2697580 B1 EP 2697580B1 EP 12715644 A EP12715644 A EP 12715644A EP 2697580 B1 EP2697580 B1 EP 2697580B1
Authority
EP
European Patent Office
Prior art keywords
evaporation
compressor
refrigerator
defrost water
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12715644.6A
Other languages
German (de)
English (en)
Other versions
EP2697580A2 (fr
Inventor
Panagiotis Fotiadis
Hans Ihle
Sebastian Rau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2697580A2 publication Critical patent/EP2697580A2/fr
Application granted granted Critical
Publication of EP2697580B1 publication Critical patent/EP2697580B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1411—Removal by evaporation using compressor heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/144—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans
    • F25D2321/1442—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans outside a refrigerator

Definitions

  • the invention relates to an evaporation device for the evaporation of defrost water of a refrigeration device, in particular a household refrigerator. Furthermore, the invention relates to a refrigerator equipped with the evaporation device, in particular household refrigeration appliance.
  • defrost water In the interior of refrigerators, such as refrigerators or freezers, created by condensation of humidity on the walls or on the interior of the refrigerator cooling evaporator defrost water, which must be removed from the interior. This defrost water is placed in an evaporating dish, e.g. is arranged outside the interior, collected and evaporated in the environment. At high humidity or strong cooling performance, there is a risk that the defrosting water collected in the evaporation tray does not evaporate quickly enough and the evaporation tray overflows.
  • the evaporation tray is often arranged in the vicinity of the compressor of the refrigerant circuit of the refrigerator.
  • the compressor releases energy in the form of heat to the environment when compressing the refrigerant circulated in the refrigerant circuit. This heat can be used in the evaporation tray to heat the trapped defrost water and thus accelerate the evaporation.
  • JP 8 226 725 A and JP 4 302981 A is an evaporation device for evaporating defrost water from a refrigeration device disclosed, wherein an evaporation tray is disposed above a compressor and a pipe, which emanates from the compressor, is formed protruding into the receiving space of the evaporation tray.
  • JP 6 265258 A an evaporation device for the evaporation of defrost water from a refrigeration device is described, wherein an evaporation tray is arranged above a compressor and a pipe outgoing from an evaporator pipe is formed einragend into the receiving space of the evaporation tray.
  • a refrigeration device having the evaporation device is the subject of the independent claim.
  • a refrigeration appliance is understood in particular to be a household refrigeration appliance, that is to say a refrigeration appliance used for household purposes or possibly even in the gastronomy sector, and in particular for storing food and / or beverages in household quantities at specific temperatures, such as, for example, a refrigerator, a freezer , a fridge freezer, a freezer or a wine storage cabinet.
  • the evaporation tray is arranged without contact with the heat source and thus also with the heat conducting device, it can be avoided that direct contact between the evaporation tray and the heat source or heat conducting device exerts mechanical stresses on the heat source or the heat conducting device during transport of the refrigeration device, thus causing damage ,
  • the heat conducting device has at least one projection for projecting into the receiving space.
  • the heat source simply on holding devices with a sufficiently large Distance above the evaporation tray can be arranged, and yet an arbitrarily large contact surface between defrost water and heat source can be generated.
  • thermal contact with defrosting water can also be produced in this way, which is not collected in an evaporation tray arranged below the heat source but in an evaporation tray arranged laterally or above the heat source.
  • the at least one projection is a bracket, in particular a metal bracket.
  • Metals generally have good thermal conductivity and are therefore preferably used as materials for forming the heat conducting device or the projection.
  • a bracket has the advantage that it can be retrofitted to the heat source with simple means.
  • the wall arrangement has a wall thickness of several millimeters.
  • the wall assembly thereby forms a larger thermal mass, which provides uniform heat dissipation even with irregular operation of e.g. allows compressor used as a heat source.
  • the heat conducting device is formed by a housing of a compressor of a refrigeration device.
  • the compressors in refrigerant circuits of refrigerators such as household refrigerators such as refrigerators or freezers, give off heat to the environment while compressing the refrigerant. The way The resulting heat can be used directly to save energy for the evaporation of defrost water.
  • An additional heating device for the evaporation tray can be dispensed with.
  • the heat source is preferably the compressor of a refrigeration device.
  • a refrigeration appliance in particular a domestic refrigeration appliance such as, for example, a refrigerator or freezer or a refrigerated freezer combination, has a housing with at least one interior space and a refrigerant circuit designed to cool the at least one interior space.
  • the interior preferably forms either the freezer compartment or the cold room, or several internal spaces may also be present to form the refrigerator freezer combination.
  • Condenser, throttle and compressor are preferably arranged outside the at least one interior of the refrigerator, while the evaporator is preferably arranged in or on the at least one interior.
  • a refrigerant passes in the refrigerant circuit and is, initially in a gaseous state, compressed by the compressor adiabatically, ie without heat exchange with the environment, whereby the refrigerant heats up. This heat is released via the condenser to the environment, whereby the refrigerant condenses.
  • a throttle ie, for example, an expansion valve
  • the evaporator which is arranged in or on the interior of the refrigerator. It expands and evaporates while taking the necessary heat of vaporization from the at least one interior of the refrigerator. Again in the gaseous state it flows to the compressor, whereby the refrigerant circuit is closed.
  • such a refrigeration device to the described evaporation device whereby the waste heat, which results from the work of the compressor, can be discharged particularly effectively via the defrost water to the environment and at the same time parts can be saved, since the waste heat of the compressor directly to Evaporating the defrost water is used.
  • This is particularly effective if not only convection and radiation contribute to the evaporation of the defrost water, but in addition a direct thermal contact between the compressor and the defrost water is produced.
  • the evaporation tray is designed for receiving defrosting water accumulating on the evaporator and / or on walls of the at least one interior. Especially at high humidity or high outside temperatures quickly condenses water on the walls or on the evaporator in at least one interior of the refrigerator, especially in the interior of a freezer.
  • lines for directing the defrost water from the evaporator and / or the walls of the at least one interior to the evaporation tray are provided to discharge this defrost water from the at least one interior. So a freezing of defrost water can be avoided.
  • Fig. 1 shows a refrigerator 10 in the form of adegefrierkombination 12 with a housing 13 which has a cooling compartment 14 and a freezer compartment 16, and with a refrigerant circuit 18.
  • the refrigerator compartment 14 and the freezer compartment 16 are separate from each other interior spaces 20, 22 of the housing and each have one Door 24, which separates the interiors 20, 22 from the environment 26 of the refrigerator 10.
  • the refrigerant circuit 18 of the refrigeration device 10 is in Fig. 1 only schematically illustrated to illustrate the operation. It has a condenser 28, a throttle 30, an evaporator 32 and a compressor 34.
  • the refrigerant circuit 18 is closed and carries a refrigerant 36 flowing in the direction of the arrows.
  • the refrigerant 36 absorbs energy in the form of heat in the interior spaces 20, 22 of the refrigeration device 10 and releases this heat to the environment 26 in the part of the refrigerant circuit 18 arranged outside the refrigeration device 10.
  • it is compressed in the compressor 34, condensed in the condenser 28, the snakes 38 to increase the surface, condensed from the gaseous state to the liquid state, and expanded via the throttle 30.
  • refrigerant circuit 18 each has an evaporator 32 per inner space 20, 22.
  • defrosting water 40 produced by cooling is discharged through lines 42 into the environment 26. It is collected in an evaporation tray 44 arranged outside the interior spaces 20, 22. There, the defrost water evaporates into the environment 26, as shown by the arrows.
  • the waste heat of the compressor 34 is used, which thus forms a heat source 46.
  • the evaporation tray 44 thus forms, together with the compressor 34, an evaporation device 48 in order to evaporate the defrosting water 40.
  • the evaporation device 48 is shown in greater detail in FIGS Fig. 2 and 3 shown.
  • Fig. 2 shows a first embodiment of the evaporation device 48. It has the compressor 34 as a heat source 46 and the evaporation tray 44 arranged thereunder. The compressor 34 floats over a holding device 50 held in contact over the evaporation device 48th Fig. 2 shows a bottom wall assembly 51 of a housing 52 of the compressor 34, to which a projection 56 is attached as a heat conducting device 58. The projection 56 protrudes into a receiving space 60 of the evaporation tray 44, in which via the lines 42, not shown here, the defrost water 40 (not shown here) is initiated.
  • the heat prevailing on the wall arrangement 51, which the compressor 34 generates when working is discharged to the standing in the receiving space 60 defrosting water 40.
  • this is so far heated or heated by the addition of energy that it evaporates or evaporates.
  • the compressor 34 also releases heat to the surface of the defrosting water 40 via radiation, as a result of which it is further heated or heated.
  • Evaporation or vaporization of the defrost water 40 creates a convective current over the surface of the defrost water 40, constantly sending new dry air to the surface, which is then capable of absorbing further evaporating or evaporating defrost water 40. It is thus achieved that, even if a high degree of air humidity causes a great deal of defrosting water 40, it evaporates quickly and the evaporation tray 44 does not overflow.
  • the projection 56 is formed in the form shown by a bracket 62, which is made of metal and protrudes into the receiving space 60.
  • the bracket 62 is attached to the wall assembly 51 of the compressor 34 so that corrosion is largely avoided. This can be done either by the bracket 62 is glued and thereby the condensation of the already evaporated defrost water 40 at the Wall assembly 51 of the compressor 34 is prevented, or that the bracket 62 is welded to the wall assembly 51, wherein the welds (not shown here) are also heated by the waste heat of the compressor 34 and so condensation of the evaporated Abtauwassers 40 is avoided. As a result, the formation of condensation on the wall assembly 51 is inhibited and corrosion can be largely avoided.
  • Fig. 3 shows a second embodiment of the evaporation device 48th
  • the housing 52 of the compressor 34 is again held above holding devices 50 above the evaporation tray 44.
  • the housing 52 has supply lines 64 for supplying refrigerant 36 and a discharge line 66 for discharging the compressed refrigerant 36.
  • the wall assembly 51 of the housing 52 is formed curved in the direction of the evaporation tray 44, which is arranged below the wall assembly 51, so that it projects into the receiving space 60.
  • no additional projection 56 is needed, which emits the heat of the compressor 34 directly to the defrost water 40, but the heat conducting device 58 is formed directly by the curved wall assembly 51.
  • the wall assembly 51 has a wall thickness of several millimeters, so that even a slight corrosion does not lead to an opening in the housing 52. Thus, a long life can be ensured.
  • the accumulating defrost water 40 is collected in an evaporation tray 44, which is usually located in a region of the machine room (not shown).
  • the defrost water 40 collected therein evaporates, favored by the heat of the compressor 34.
  • the compressor 34 Since the compressor 34 is warm, it radiates heat and thus directly heats the standing in the lower evaporation tray 44 defrosting water 40 and thus increases by the increased water temperature, the evaporation performance. Further, the air surrounding the compressor 34 is affected by the temperature differences, i. by natural convection, thus moving and creating an air exchange in the immediate vicinity of the water surface of the defrost water 40. This leads to an increased evaporation efficiency through improved air supply.
  • New efficient compressors 34 increasingly have the property that they are warmer at the lower housing part of the compressor 34 than above, since, for example, the suction gas cooling of the compressor oil is omitted or the like.
  • an evaporation tray 44 is placed under the compressor 34.
  • one or more heat-conducting parts can be added to the compressor 34 in the lower area, eg a metal part. These can be so pronounced that they protrude at an elevated level of the evaporation tray 44 in the defrost water 40 and thus a heat conduction from the compressor housing 52 is realized in the defrost water 40. It could in one embodiment of this thermal connection a metal bracket 62 welded. This method is practiced, for example, to lock evaporation cups 44 on the compressor 34. Should there be little water in the evaporation tray 44, the thermal connection part projects only into the air below the compressor 34.
  • this thermal connection part are chosen so that when transporting the refrigerator 10 no direct contact with the evaporation tray 44 can take place to avoid mechanical stresses on the compressor 34 and on the welded part or the welded parts. Overall, the risk of corrosion and resulting damage to the refrigerant circuit 18 should be low because the compressor 34 represents the heat and thus condensation is excluded at the weld. Furthermore, the compressor housing 52 is typically designed with a few millimeters of wall thickness, so that a degree of corrosion can be accepted.
  • Another embodiment could be a gluing of a thermally conductive connecting part. This would possibly have the advantage of reduced risk of corrosion due to the relatively humid air in the region of the contact point with the compressor 34.
  • the simplest embodiment is to place the evaporation tray 44 below the compressor 34 so that the belly of the compressor 34 can dip into the defrost water 40 at higher levels. This possibility depends on the geometry of the compressor 34. In very flat pronounced compression tubes this solution is rather difficult, on the other hand, small radii in the lower part of the compressor 34 facilitate this solution substantially.
  • the compressor waste heat can now also be used on the lower side of the compressor 34, not only via radiation or convection, but also via heat conduction, to increase the evaporation capacity. Furthermore, no energy-rich vibrations of the compressor 34 are transmitted to the evaporation tray 44 or the engine room by the structure, although a thermal coupling is brought about. Thus, the sound power of the refrigerator 10 is not adversely affected. In addition, a detrimental corrosion of the compressor housing 52 over the life should the refrigeration device 10 may be avoided because the compressor 34 does not project itself into the defrost water 40, but only the projecting into the defrost water 40 part can be corrosive affected. In addition, there are no further problems during transport of the refrigerator 10 due to lack of mechanical contact and the increased surface of the compressor 34, its temperature is lowered, which benefits its efficiency and its life.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)

Claims (11)

  1. Dispositif évaporateur (48) pour l'évaporation de l'eau de dégivrage (40) d'un appareil frigorifique (10), notamment appareil frigorifique ménager, présentant une source de chaleur (46) et un bac d'évaporation (44) avec un volume récepteur (60) pour recevoir l'eau de dégivrage (40), le bac d'évaporation (44) étant disposé de manière à ne pas être en contact avec la source de chaleur (46), la source de chaleur (46) présentant un moyen de conduction de chaleur (58), et le moyen de conduction de chaleur (58) pénétrant dans le volume récepteur (60), caractérisé en ce que le moyen de conduction de chaleur (58) est formé par un boîtier (52) d'un compresseur (34) de l'appareil frigorifique (10).
  2. Dispositif évaporateur (48) selon la revendication 1, caractérisé en ce que le moyen de conduction de chaleur (58) présente au moins une partie saillante (56) destinée à pénétrer dans le volume récepteur (60).
  3. Dispositif évaporateur (48) selon la revendication 2, caractérisé en ce que la au moins une partie saillante (56) est un étrier (62), en particulier un étrier métallique.
  4. Dispositif évaporateur (48) selon l'une des revendications 2 ou 3, caractérisé en ce que le moyen de conduction de chaleur (58) est disposé sur un agencement de paroi (51) de la source de chaleur (46) ou est formé par celui-ci et en ce que la partie saillante (56) est soudée ou collée sur l'agencement de paroi (51).
  5. Dispositif évaporateur (48) selon la revendication 4, caractérisé en ce que l'agencement de paroi (51) présente une épaisseur de paroi de plusieurs millimètres.
  6. Dispositif évaporateur (48) selon l'une des revendications précédentes, caractérisé en ce que le moyen de conduction de chaleur (58) est de forme courbe pour pénétrer à l'intérieur du volume récepteur (60).
  7. Dispositif évaporateur (48) selon l'une des revendications précédentes, caractérisé en ce que le moyen de conduction de chaleur (58) est disposé au-dessus du bac d'évaporation (44).
  8. Dispositif évaporateur (48) selon l'une des revendications précédentes, caractérisé en ce que la source de chaleur (46) est le compresseur (34) d'un appareil frigorifique (10).
  9. Appareil frigorifique (10), notamment appareil frigorifique ménager, présentant une carrosserie (13) dotée d'au moins un espace intérieur (20, 22) et un circuit de réfrigérant (18) conçu pour refroidir le au moins un espace intérieur (20, 22), le circuit de réfrigérant (18) comportant au moins un des composants suivants :
    - condenseur (28),
    - dispositif d'étranglement (30),
    - évaporateur (32),
    - compresseur (34),
    caractérisé par un dispositif évaporateur (48) selon l'une des revendications précédentes.
  10. Appareil frigorifique (10) selon la revendication 9, caractérisé en ce que le bac d'évaporation (44) est conçu pour recevoir l'eau de dégivrage (40) formée sur l'évaporateur (32) et/ou les parois du au moins un espace intérieur (20, 22).
  11. Appareil frigorifique (10) selon la revendication 10, caractérisé en ce que des conduites (42) sont prévues pour conduire l'eau de dégivrage (40) de l'évaporateur (32) et/ou les parois du au moins espace intérieur (20, 22) vers le bac d'évaporation (44).
EP12715644.6A 2011-04-14 2012-04-11 Dispositif évaporateur pour appareil frigorifique Not-in-force EP2697580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110007414 DE102011007414A1 (de) 2011-04-14 2011-04-14 Verdunstungsvorrichtung für ein Kältegerät
PCT/EP2012/056497 WO2012140029A2 (fr) 2011-04-14 2012-04-11 Dispositif évaporateur pour appareil frigorifique

Publications (2)

Publication Number Publication Date
EP2697580A2 EP2697580A2 (fr) 2014-02-19
EP2697580B1 true EP2697580B1 (fr) 2015-08-19

Family

ID=45992210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12715644.6A Not-in-force EP2697580B1 (fr) 2011-04-14 2012-04-11 Dispositif évaporateur pour appareil frigorifique

Country Status (4)

Country Link
EP (1) EP2697580B1 (fr)
CN (1) CN103765136B (fr)
DE (1) DE102011007414A1 (fr)
WO (1) WO2012140029A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104720443A (zh) * 2015-03-19 2015-06-24 苏州市小伙伴电器有限公司 能防止蓄水盒溢水的食品冷藏展示柜
CN105020868A (zh) * 2015-07-06 2015-11-04 珠海格力电器股份有限公司 空调系统
DE102016013921A1 (de) * 2016-08-22 2018-02-22 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
CN111188752A (zh) * 2020-01-22 2020-05-22 青岛海尔电冰箱有限公司 压缩机仓组件及冰箱

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04302981A (ja) * 1991-03-29 1992-10-26 Hitachi Ltd 冷蔵庫
JPH06265258A (ja) * 1993-03-15 1994-09-20 Toshiba Corp 冷蔵庫の蒸発皿の蒸発装置
JPH08226745A (ja) * 1995-02-20 1996-09-03 Fujitsu General Ltd 電気冷蔵庫
JPH08338680A (ja) * 1995-06-14 1996-12-24 Matsushita Refrig Co Ltd 冷蔵庫
NZ286458A (en) * 1996-04-26 1999-01-28 Fisher & Paykel Evaporation tray to catch defrost water from refrigerator, bottom consists of flexible membrane
JP2005283012A (ja) * 2004-03-30 2005-10-13 Toshiba Corp 冷蔵庫
KR100575678B1 (ko) * 2004-05-18 2006-05-03 엘지전자 주식회사 진동 저감형 냉장고
WO2009152862A1 (fr) * 2008-06-20 2009-12-23 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique avec cuvette d'évaporation

Also Published As

Publication number Publication date
WO2012140029A3 (fr) 2012-12-20
WO2012140029A2 (fr) 2012-10-18
EP2697580A2 (fr) 2014-02-19
CN103765136A (zh) 2014-04-30
CN103765136B (zh) 2016-05-04
DE102011007414A1 (de) 2012-10-18

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